Tube or flue cleaner



(N6 Model.)

' D. HANSON.

TUBE 0R FLUB CLEANER.

IN0.527,972. Patented Oct. 23,1894,

/ "iffiwww MTNEEEEE Ilm/ENTER SIMM www NITED STATES ATENT OFFICE.

DANIELI-IANSON, OF CHELSEA, MASSACHUSETTS.

TUBE OR FLUE CLEANER.

SPECIFICATION forming part of Letters Patent No. 527,972, dated October 23, 1894.

Application iiled November 11, l893. Serial No.4901624' (N0 mdeL) To all whom t may concern:

Be it known that I, DANIEL I'IANsoN, of Chelsea, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Tube or Flue Cleaners, of which the following is a specilication. v

My invention relates to Scrapers adapted to remove soot and other obstructions from boiler tubes or tlues.

The object of my invention is to provide a simple and durable scraper adapted to auto matically conform, to a certain extent7 to the dimensions of the tube or flue to be cleaned, and to be adjusted to tlues of different sizes. The construction by which Iattain these objects is illustrated in the accompanying drawings, in which- Figure 1 is a side view of the device; Fig. 2, a transverse section on the line 1, 1, Fig. 1. Fig. 3 represents a similar section, showing the adaptability of the scraping plates to the dimensions of the fine. Fig. 4. is a longitudinal section.

Similar letters refer to similar parts th roughout the several views.

`Upon each end of a metallic rod a are fixed heads h b, ot' metal, from which two sets of resilient arms c d diverge toward each other. The ends e of the arms c, Figs. 1 and 4, are turned in toward the bar c and to said arms are ad]l ustably secured the scraping plates f, by means of bolts g operating in connection with nuts 71.. The bolts g are bored through from side to side to receive the ends e of the arms c and, passing through orifices in the plates f, are secured the plates by threaded nuts h. The scraping plate is in four sections f, the edges of which overlap. The resilience of the arms c enables the plates f to adapt themselves, within certain limits, to the different sizes of flues. When the nuts h are loosened from the plates f, said plates may be moved in or out and the scraper made to assume a new diameter, after which they .are again secured to the ends e of the rods c by the tightening of said nuts.

The flexible arms d are inclined as shown, so that their outermost portions 7c project outwardly about as far as the outer edges of the platesf. Said arms form aguide, the object of which is to facilitate the insertion o the device into a flue.

The resilience of the arms d enables them to accommodote themselves to lines of larger or smaller diameter.

The rod a has upon one end of it a threaded socket by which it may be secured to the end of an operating rod or handle.

I claimv The improved flue scraper comprising in its construction the rod a, the heads b b afixed to said rod, the diverging elastic arms c attached to one of said heads and provided with inwardly bent ends, the segmental scraping plates f adjustably secured to the in- Wardly bent portions of the arms, and the diverging elastic arms CZ attached to the other head h and having their ends inwardly inclined and'separate from the Scrapers, substantially as described.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 15th day of July, A. D. 1893.

DANIEL HANSON.

Witnesses:

DAVID B. WESTON, I. W. LORING. 

